3109491 has 36 divisors (see below), whose sum is σ = 5708664. Its totient is φ = 1612800.

The previous prime is 3109471. The next prime is 3109501. The reversal of 3109491 is 1949013.

3109491 = 18³ + 19³ + ... + 59³.

It is not a de Polignac number, because 3109491 - 2⁶ = 3109427 is a prime.

3109491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3109411) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4531 + ... + 5171.

It is an arithmetic number, because the mean of its divisors is an integer number (158574).

Almost surely, 2^3109491 is an apocalyptic number.

3109491 is a deficient number, since it is larger than the sum of its proper divisors (2599173).

3109491 is a wasteful number, since it uses less digits than its factorization.

3109491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 662 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 3109491 is about 1763.3748892394. The cubic root of 3109491 is about 145.9586265453.

It can be divided in two parts, 3109 and 491, that added together give a square (3600 = 60²).

The spelling of 3109491 in words is "three million, one hundred nine thousand, four hundred ninety-one".